Inventory policies are associated to this Inventory Service object. Remove all the associated Inventory policies and retry.
Source: Inventory Service object property page
Severity: Warning
Explanation: When you want to change the role of an Inventory Service object, you must perform certain tasks to support the new role of the server.
If there are workstations and Inventory policies attached to the server, you must remove the associated Inventory policies before you change the role of the server.
Action: Remove the associated Inventory policies.